The issue of ooze treatment and removal has forever been a troublesome issue in the wastewater treatment industry and is likewise a momentum problem area. The first of these is the change of liquid slime into strong ooze with the assistance of muck dewatering innovation gear, diminishing the water content from more than 97% to around 80%. (hereinafter alluded to as “Huaneng Technology”) through the presentation and assimilation of another age of progressive dewatering innovation gear in the United States – RFP turning channel press dewatering machine, in this way in the customary sewage treatment (hereinafter alluded to as “Huaneng Technology”) has observed a leap forward in innovation development in the conventional wastewater treatment process by presenting and processing another age of progressive dewatering innovation hardware from the United States – RFP rotating channel press dewatering machine, which has drawn in much conversation in the business. Thus, Water Industry Market magazine talked with Zhong Xiaohong, Deputy General Manager of Huaneng Technology.
Decreasing the water content is the “first concern” of ooze treatment
As of late, with the ceaseless development of China’s sewage treatment limit, just as the fast expansion in the number and size of metropolitan sewage treatment plants, slop creation is additionally expanding step by step. Before the finish of September 2015, the nation’s urban areas and towns fabricated an aggregate of 3,830 sewage treatment plants, sewage treatment limit has arrived at 162 million m3/d, the going with muck has surpassed 30 million tons/year (80% of water content). As per insights from the Ministry of Housing and Construction, before the finish of 2014, around 56% of slime had been discarded innocuously through building materials, cremation, treatment and clean landfill, and almost 50% of the muck had not yet been discarded innocuously. Muck has a mind boggling creation, which contains an enormous number of pathogenic microscopic organisms, parasites, sickness causing microorganisms, just as weighty metals and poisonous and hurtful substances, and inappropriate therapy and removal will cause auxiliary contamination of the climate, counterbalancing the consequences of contamination decrease partially. Particularly as of now, China’s fast monetary turn of events, the speed of urbanization development keeps on speeding up, an enormous number of metropolitan sewage treatment plants assembled and put into activity, the excess ooze will be created in huge amounts, slime treatment and removal issues are exceptionally pressing
As indicated by Zhong Xiaohong, slop treatment and removal is isolated into two phases: the primary stage is with the assistance of dewatering hardware will be more noteworthy than 97% of the water content of the liquid ooze, into the water content of around 80% of the strong ooze; the subsequent stage is the subsequent strong muck to additionally do treatment and removal, until the re-visitation of the land. To decrease the water content of ooze from metropolitan sewage treatment plants and accomplish the objective of slop decrease, the nation has severe guidelines on the water content of muck for various removal strategies: the water content of ooze from sewage treatment plants in China should be under 80%; slime from sewage treatment plants in China, for example, the last removal of blended landfill in with homegrown waste, the water content should be under 60%, for example, the last removal as a landfill cover with soil, the If the last removal is for arranging or consuming into blocks, the dampness content should be under 40%; assuming the last removal is for saline, sandy and deserted mine dirt improvement, the dampness content should be under 65%; in the event that the last removal is self-supporting burning, the dampness content should be under half.
Slime dewatering requires further developed specialized gear
“The high water content characteristic has turned into a key control factor restricting the ecologically strong removal of muck, and dewatering of slop is required paying little mind to the last removal and end technique utilized.” According to Zhong Xiaohong, in spite of the fact that innovation is presently being grown all the more quickly and seriously, the primary stage won’t vanish for a predictable and impressive timeframe. Instructions to work on the effectiveness of muck dewatering in the primary stage is in this manner a central point of contention. How to assess muck dewatering innovation? As far as techno-financial markers, it is either a similar measure of cash to deliver more ooze with a similar dampness content, or a similar measure of slop with a similar dampness content for less cash. Obviously there are additionally contemplations of workplace, mechanization, activity and upkeep, and so forth
As per Zhong Xiaohong, the muck dewatering gear currently normally utilized are belt channel press dewaterers, decanter axes, stacked-screw channel press dewaterers and plate and edge dewaterers. These kinds of ooze dewatering hardware are currently broadly utilized in different wastewater treatment plants, and by and large the dampness content of the slop cake is between 76-82% subsequent to dewatering. Each has its own benefits and impediments in functional use.
Belt channel presses are less expensive, however have an enormous impression, open activity, helpless working conditions, high disappointment rates, many parts (orientation, belts, scrubbers, shafts, and so on) require successive upkeep and change, which can prompt personal time, and working and support costs are not unimportant.
The moderately great dewatering impact and shut sort of the decanter diffusive dewaterer are its benefits. Notwithstanding, this hardware is powerful, consumes a great deal of power, is uproarious and requires an extra temperature control framework to screen the temperature. Besides, the flocculant dosing isn’t handily controlled in the rotator, which can undoubtedly prompt exceptionally high dosages. What’s more, the greatest weaknesses of this gear are: intricate design, high disappointment rate, incredible trouble in upkeep and high requests on the working staff. Extra smashers are normally needed to oblige a wide range of slop; the entire machine should likewise be run when the approaching mud volume is low.
The stacked screw channel press dewatering machine has low power and low power utilization. In any case, extra smashers are regularly needed to oblige a wide range of slop; the machine should likewise be worked when the muck feed is low; after closure, the whole machine should be flushed physically. High prerequisites for front-end ooze regulation, in any case direct slurry yield. High necessities for working faculty, bulky substitution of wearing parts and high support and fix costs. Moreover, the hardware is likewise open for activity and has a helpless workplace.
The plate and edge channel press has a less complex development, with a high filtration push, and is reasonable for a wide range of slime, however it can’t run constantly and apportion slop in clumps; extra smashers are generally needed to oblige a wide range of ooze; the entire machine should waste water treatment plants automatic filter press be run when the approaching ooze is low; the flocculant is dosed in the hardware and how much medication isn’t effortlessly controlled, which can undoubtedly prompt exceptionally high dosages; it possesses a great deal of land and has a high starting development speculation; it is high in power and has high prerequisites for power supply (power factor). Complex design, high disappointment rate (high tension delta mud siphon and pressure driven framework), significant expense as transitory parts, for example, channel fabric and channel plate should be supplanted every now and again; high necessities for working staff, frequently requiring manual on location activity; open activity and helpless workplace.
As per Zhong Xiaohong, muck dewatering is a vital piece of the whole slime treatment process. Notwithstanding, by and large, the utilization of traditional dewatering hardware utilized in the first sewage treatment market isn’t great. In light of the present circumstance, Huaneng Technology presented an American slop dewatering innovation gear through broad examination, and after rehashed R&D tests, accomplished great outcomes.
Another age of progressive dewatering gear that is green and harmless to the ecosystem
In view of the earnest interest for profound dewatering in the slime treatment and removal market, Huaneng presented another age of progressive dewatering hardware from the US – the RFP turning channel press. This specialized hardware was designed and created by Prime Solution Inc, a US organization, which went into a patent selectiveness and creation authorizing concurrence with Huaneng Technology in 2014.
RFP Rotary Filter Press
The RFP turning channel press utilizes a unique and protected innovation and design that empowers water to be immediately taken out from the slime by contact and tension. The tempered slime enters a stream channel comprising of two equal treated steel channel circles at a specific strain. As the muck gradually pivots in the shut stream channel, it pushes ahead along the inexorably smaller stream channel during the crushing system, making a strain dynamic rubbing zone at the contact edge between the ooze and the channel divider. The water in the muck is then released from the framework through the channel circle in the most limited conceivable stroke to accomplish the channel press work.
The RFP turning channel press utilizes a unique and licensed innovation and design that empowers water to be immediately eliminated from the muck by rubbing and strain. The tempered ooze enters a stream channel comprising of two equal treated steel channel plates at a specific tension. As the slime gradually turns in the shut stream channel, it pushes ahead along the undeniably smaller stream channel during the crushing system, making a strain dynamic grating zone at the contact edge between the muck and the channel divider. The water in the ooze is then released from the framework through the channel circle in the most limited conceivable stroke to accomplish the channel press work.
The RFP revolving channel press enjoys eight critical benefits: 1. Little impression. The conservative plan guarantees simple establishment in an assortment of utilizations without primary acclimations to the structure and works with the reestablishment of old gear. 2. Versatile and huge handling limit. A solitary unit can treat as much as 20 tons of totally dry ooze each day, making it financially savvy; separate treatment units can be added to build the treatment limit; impervious to bay changes and high burden limit. 3. Low monitoring prerequisites and simpler activity. One button for fast beginning/stop; serious level of mechanization, no requirement for full-time monitoring. 4. Tough and long help life. The course don’t contact the slime and turn at low speed (1-1.2rpM), so mileage is insignificant; the typical working season of the parts arrives at 100,000 hours and the ordinary assistance life of the hardware isn’t under 15 years. 5. Little discharging water volume, irregular flushing is conceivable. 6. Low running expenses. The hardware drinks less power, less discharging water, less compound specialists and less parts substitution, hence viably decreasing its working expenses. 7. Low commotion. The commotion level of the hardware is under 60 decibels because of low speed activity. 8. Great workplace. Completely encased design, no smell spillage, perfect and clean site.
As a USEPA endorsed green dewatering innovation, the RFP turning channel press is broadly utilized for essential slime, anaerobic absorption muck, oxygen consuming assimilation slop, essential/auxiliary ooze blend, sequencing bunch sewage ooze, sedimentation ooze (aluminum coagulant), and so forth It has set up numerous accomplishments in civil, modern, rural, petrochemical, food, energy and mining fields and is generally We are perceived and appreciated. Forrest Attwodd, Director of the Stanley Wastewater Treatment Plant in Virginia, USA, remarks: “The administrator point of interaction is straightforward and work. You just need one button to begin and the plant runs consequently. What I like most with regards to it is that it essentially never separates.” Mac MacDonald, Operations Supervisor at Lancaster Wastewater Treatment Plant, South Carolina, USA, says: “My plant has not very many representatives and I want my dewatering gear to work without a full-time administrator. The Rotary Filter Press slime dewaterer (RFP) works naturally without the requirement for 24-hour staff oversight.
In China, the RFP revolving channel presses produced by Huaneng Technology have been utilized at the Chengdu Jintang County Printing and Dyeing Industrial Zone Wastewater Treatment Plant, Suzhou Tongli Ancient Town Water Ecological Restoration Super Magnetic Dialysis Project and Jiangyou County Wastewater Treatment Plant, and so on They are steady and dependable, yet additionally save energy and lessen utilization for the proprietor, establish a decent workplace for the administrator laborers and bring another experience feeling.
Slime dewatering remodel project at Huai Kou printing and coloring wastewater treatment plant in Jinbao County, Sichuan Province
Zeroing in on advancement and taking a stab at a definitive improvement innovation
By making a leap forward in the specialized development of conventional gear with Huaneng Technology’s RFP rotating channel press, Zhong Xiaohong draws out for us a suggestion on the most proficient method to do specialized advancement in customary wastewater treatment processes. He accepts that in a market climate with genuine homogenisation rivalry, organizations can tolerate outing and win on the lookout assuming they keep on enhancing, make progress toward greatness and focus on a definitive in innovation.
Toward the finish of 2014, the organization’s lead item, the attractive partition innovation, won the second prize of the National Science and Technology Progress Award. Its center innovation, “Very Magnetic Separation Water Treatment Equipment” and “Circle Purification Wastewater Equipment”, has the noteworthy highlights of little impression, low speculation, low activity cost, enormous treatment volume, great water quality, high muck fixation and advantageous administration and upkeep. They have been generally utilized in coal mineshafts, scenes, districts, petrol, electric power, metallurgy, paper making, printing and coloring, just as water contamination crisis treatment, water pre-treatment and different fields. Right now, because of its short home time (4-6 minutes), great impact (evacuation of suspended matter, all out phosphorus, COD, green growth) and quick improvement of water quality, the innovation is generally utilized in the field of metropolitan dark rancid water treatment, for the public authority to react to the public’s call for sure fire activity, fast and viable disposal of dark rank peculiarity, assumed a colossal part. The exceptional specialized element of this innovation, which couldn’t measure up to different advances, is that the home time is short and simultaneously a decent treatment impact is accomplished.
The accomplishment of the RFP rotational channel press additionally lies chasing a definitive in innovation: energy saving and utilization decrease as a forward leap, in light of the customary innovation gear from the specialized standard of the first innovation to improve. Zhong Xiaohong says of Huaneng’s RFP rotating channel press innovation: “The supervisor needs to save energy and lessen utilization, and the administrator needs simple activity, a clean workplace and low commotion, so everybody is glad.