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Energy-saving emission-reducing urban sewage disposal system

A treatment system, urban sewage technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of unsatisfactory sedimentation effect, achieve good modification effect, The effect of enhancing the adsorption activity

Inactive Publication Date: 2019-04-19
温州立胜建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, sewage is usually settled through multi-stage sedimentation tanks before the membrane biochemical reactor MBR system, and in order to improve the sedimentation efficiency, coagulants are usually added regularly and quantitatively in the sedimentation tanks, but the coagulants currently on the market are usually Using a single aluminum sulfate coagulant or ferric chloride coagulant, the precipitation effect is not ideal

Method used

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  • Energy-saving emission-reducing urban sewage disposal system

Examples

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Embodiment 1

[0037] An energy-saving and emission-reducing urban sewage treatment system, including an enhanced pretreatment system, a self-priming jet aerated biological filter system, a compound fluidized bed biofilm reaction tank system, and a sludge treatment and return system. The compound fluidized bed The biofilm reaction tank system includes a sedimentation tank, and the sedimentation tank is useful for adding coagulants to improve the sedimentation effect. In each liter of sewage, the coagulant raw materials are shown in Table 1 in parts by weight.

[0038] Wherein, the preparation method of coagulant comprises the following steps:

[0039] Step 1, the modification of fly ash, deploy 1L of mixed acid solution of hydrochloric acid and sulfuric acid with a concentration of 1mol / L, put the fly ash with a fineness of 325 sieves into the mixed acid solution and soak for 20-30min, the soaking process Stir continuously in the middle, and dry for later use;

[0040] Step 2, secondary mod...

Embodiment 2

[0044] The difference from Example 1 is that the coagulant raw materials are as shown in Table 1 in parts by weight.

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Abstract

The invention discloses an energy-saving emission-reducing urban sewage disposal system. The system comprises a sedimentation tank, wherein the sedimentation tank adopts a mode of adding a coagulant to improve the sedimentation effect; in each liter of sewage, the coagulant comprises 12-15 parts by weight of fly ash in certain fineness after the fly ash is filtered by a 325-mesh sieve, wherein thefly ash is modified by acid treatment. The system has the advantages that the surface of the fly ash has a plurality of microporous structures, so that the fly ash has good adsorption performance. Due to small particles and the large specific surface area of the 325-mesh fly ash, the adsorption performance of the fly ash is improved, and the settling speed of the small particles is low so that there can be enough time for small molecules in the sewage to be adsorbed in the settling process. In addition, after the fly ash is subjected to acid treatment modification, the activity of the fly ashcan be excited, so that the surface of the fly ash becomes rough, sealed pore canals of the fly ash are opened, the porosity and the specific surface area are increased, a large number of active points such as Al and Si are exposed, and the adsorption activity of the fly ash is greatly improved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an energy-saving and emission-reducing urban sewage treatment system. Background technique [0002] With the rapid development of our urban and rural construction, more and more urban sewage has brought enormous pressure to sewage treatment. [0003] The patent with the notification number CN206244618U discloses an energy-saving and emission-reducing urban sewage treatment system. Treatment system, membrane cleaning system, sludge treatment system, sewage production tank is connected to the pretreatment system through the raw water pump, the pretreatment system is composed of a regulating tank, a hydrolytic acidification tank, a reverse flow rapid sedimentation diversion system and a reverse flow aeration filter tank , the adjustment tank is connected to the reverse flow rapid sedimentation and diversion system through the hydrolysis acidification tank, the hydrolysis acidificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/5236C02F1/56C02F3/02C02F9/00C02F2001/007
Inventor 余剑陈庆爽王怡
Owner 温州立胜建设有限公司
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