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Method of recyclably pre-treating sludge press filtrate

A technology of sludge press filtration and pretreatment, applied in special treatment targets, chemical instruments and methods, adsorbed water/sewage treatment, etc. Good pretreatment effect

Inactive Publication Date: 2017-11-17
上海同济普兰德生物质能股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In view of the high concentration of organic matter and nitrogen and phosphorus in sewage, through the process of "filler adsorption-chemical regeneration-biological removal", by adjusting the type and quantity of functional fillers, and adjusting the type and concentration of regeneration liquid, etc., can effectively reduce and Adjust the flow and concentration of sewage that finally enters the biological process of the sewage plant, so that the treatment of sludge press filtrate is more stable and efficient

Method used

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  • Method of recyclably pre-treating sludge press filtrate
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  • Method of recyclably pre-treating sludge press filtrate

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Embodiment 1

[0029] A method of recyclable pretreatment of sludge press filtrate in this embodiment comprises the following steps, wherein the parameters involved are shown in Table 1:

[0030] (1) Send the sludge press filtrate to the packing adsorption section, and the functional zeolite will adsorb and fix the nitrogen and phosphorus pollutants in the sludge press filtrate on the zeolite, and then flow into the sewage treatment plant for subsequent treatment;

[0031](2) At the same time, the filler adsorption section enters the regeneration stage, and the water quality adjustment section contains regeneration salt solution. The regeneration salt solution is passed into the filler adsorption section, and the nitrogen and phosphorus pollutants on the zeolite are enriched in the regeneration stage through chemical regeneration and ion exchange. In the salt solution, the regeneration of zeolite and the secondary transfer of nitrogen and phosphorus pollutants are realized, and then the regen...

Embodiment 2

[0040] A method for recyclable pretreatment of sludge press filtrate in this embodiment comprises the following steps, wherein the parameters involved are shown in Table 3:

[0041] (1) The sludge press filtrate is sent to the filler adsorption section, and the filler ion exchange resin adsorbs and fixes the nitrogen and phosphorus pollutants in the sludge press filtrate on the ion exchange resin, and then flows into the sewage treatment plant for subsequent treatment;

[0042] (2) At the same time, the filler adsorption section enters the regeneration stage, the water quality adjustment section is filled with regenerated salt solution, and the regenerated salt solution is passed into the filler adsorption section, and the nitrogen and phosphorus pollutants on the ion exchange resin are enriched through chemical regeneration and ion exchange In the regenerated salt solution, the regeneration of the ion exchange resin and the secondary transfer of nitrogen and phosphorus polluta...

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Abstract

The invention discloses a method of recyclably pre-treating sludge press filtrate. The method comprises the following steps of: feeding the sludge press filtrate into a filler adsorption section, adsorbing and fixing nitrogen and phosphorus pollutants to filler, and flowing into a sewage treatment plant for follow-up treatment; meanwhile, the filer adsorption section is subjected to regeneration, enriching the nitrogen and phosphorus pollutants on the filler in a regenerated salt solution to regenerate the filler and secondarily transfer the nitrogen and phosphorus pollutants, and then introducing the regenerated salt solution into a microbial reaction section so as to finally remove the nitrogen and phosphorus pollutants by action of microorganisms; and then, feeding new sludge press filtrate, and repeating and successively circulating filter adsorption, chemical regeneration and biological removal. By the adsorbing action of the functional filler, concentrations of organic matters and nitrogen and phosphorus in the press filtrate can be reduced at the same time, so that the impact load on a sewage treatment plant is reduced. The C / N ratio of the treated press filtrate is more suitable for secondary biological treatment of the sewage treatment plant, thereby playing a relatively good pre-treatment role.

Description

technical field [0001] The invention belongs to the technical field of sludge press filtrate pretreatment, in particular to a method for recyclable pretreatment of sludge press filtrate. Background technique [0002] In recent years, sludge treatment technology has been widely used in my country. Various sludge treatment technologies not only help to reduce the greenhouse effect and regulate climate change, but also promote the circulation of nutrients through the utilization of nutrient-rich end products. , to replace some fossil fuels such as petroleum and coal, and thus has become one of the important ways to solve energy and environmental problems. However, sludge press filtrate is inevitably produced during the sludge treatment process. Whether it is direct dehydration of sludge or dehydration after sludge digestion, the treatment of press filtrate has become a difficult link in the process of sludge treatment and disposal. [0003] The filtrate mainly has the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/42C02F101/16C02F101/30C02F101/10
CPCC02F1/28C02F1/42C02F2101/105C02F2101/16C02F2101/30C02F2303/16
Inventor 戴晓虎张一帆刘文静薛勇刚周程倪伟
Owner 上海同济普兰德生物质能股份有限公司
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