A method for deep dehydration of cyanobacteria

A deep dehydration and cyanobacteria technology, applied in the field of environmental engineering, can solve the problems of reducing the water content of cyanobacterial algae sludge and high water content of cyanobacterial algae mud, and achieve the effects of being beneficial to subsequent treatment, improving the filter press effect and reducing the treatment cost.

Active Publication Date: 2020-07-24
无锡市水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a method for deep dehydration of cyanobacteria, which solves the problem of high water content of cyanobacteria mud, effectively reduces the water content of cyanobacteria mud through conditioning and pressure filtration, and is beneficial to subsequent deal with

Method used

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  • A method for deep dehydration of cyanobacteria
  • A method for deep dehydration of cyanobacteria
  • A method for deep dehydration of cyanobacteria

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Embodiment 1

[0027] Such as figure 1 A method for deep dehydration of cyanobacteria is shown. In this method, the cyanobacteria produced by the algae water separation station are conditioned and then press-filtered to obtain cyanobacteria mud with a water content below 60%. The filtered water is passed through lye, gas Floating tank, AO biological tank treatment and sedimentation tank meet the urban sewage discharge standard;

[0028] The lye adjusts the pH of the filtered water to neutral or slightly alkaline, and the air flotation tank uses coagulants and coagulants to react with the filtered water to form flocs and separate solids and liquids through air flotation .

[0029] Before the cyanobacteria is conditioned, air flotation sludge is added for mixing.

[0030] The air flotation sludge is obtained through reaction in an air flotation tank.

[0031] Said cyanobacteria adopts blooming cyanobacteria, which refers to cyanobacteria salvaged from eutrophic lakes or other still water bo...

Embodiment 2

[0039] A method for deep dehydration of cyanobacteria. In the method, the cyanobacteria produced by the algae water separation station are conditioned and then press-filtered to obtain cyanobacteria with a water content below 60%. The filtered water is passed through lye, air flotation tank, After AO biological pool treatment and sedimentation tank, it reaches the urban sewage discharge standard;

[0040] The lye adjusts the pH of the filtered water to neutral or slightly alkaline, and the air flotation tank uses coagulants and coagulants to react with the filtered water to form flocs and separate solids and liquids through air flotation .

[0041] Before the cyanobacteria is conditioned, air flotation sludge is added for mixing.

[0042] The air flotation sludge is obtained through reaction in an air flotation tank.

[0043] Said cyanobacteria adopts bloom cyanobacteria, which refers to cyanobacteria salvaged from eutrophic lakes or other still water bodies that form blooms...

Embodiment 3

[0051] A method for deep dehydration of cyanobacteria. In the method, the cyanobacteria produced by the algae water separation station are conditioned and then press-filtered to obtain cyanobacteria with a water content below 60%. The filtered water is passed through lye, air flotation tank, After AO biological pool treatment and sedimentation tank, it reaches the urban sewage discharge standard;

[0052] The lye adjusts the pH of the filtered water to neutral or slightly alkaline, and the air flotation tank uses coagulants and coagulants to react with the filtered water to form flocs and separate solids and liquids through air flotation .

[0053] Before the cyanobacteria is conditioned, air flotation sludge is added for mixing.

[0054] The air flotation sludge is obtained through reaction in an air flotation tank.

[0055] Said cyanobacteria adopts blooming cyanobacteria, which refers to cyanobacteria salvaged from eutrophic lakes or other still water bodies that form bloom...

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Abstract

The invention belongs to the technical field of environmental engineering, and particularly relates to a method for deep dehydration of cyanobacteria. The method comprises the steps: conditioning cyanobacteria produced by an algae-water separation station, performing filter pressing so as to obtain cyanobacteria algae gel with a water content of 60% or below, and treating filtered water through analkali liquid, an air floating pool, an AO biological pool and a sedimentation tank so as to meet the urban sewage discharge standard, wherein the alkali liquid is used for adjusting the pH value ofthe filtered water to neutrality or weak alkalinity, in the air floating pool, a coagulant and coagulant aids are utilized to perform a coagulation reaction with the filtered water, and after floc isformed, solid-liquid separation is conducted through an air floatation effect. The problem of high water content of the cyanobacteria algae gel is solved, and the water content of the cyanobacteria algae gel can be reduced effectively after conditioning and pressure filtration are performed, so that reduction of the cyanobacteria is achieved after salvage is performed, and subsequent treatment isfacilitated.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a deep dehydration method for cyanobacteria. Background technique [0002] With the development of modern Chinese society and the increase of population, the water pollution of rivers and lakes in various places has increased year by year. In recent years, some lakes in China have gradually experienced eutrophication. The root cause of water eutrophication is excess nutrition in the water body, which leads to the reduction of species diversity in the water biome during the deduction process of survival competition, and the transformation of grass-type water body to algae-type water body. Wuxi Taihu Lake is one of the typical representatives of domestic eutrophication lakes. With the substantial increase in the number of cyanobacteria in the water body of Taihu Lake, the ecological structure in the water body is seriously out of balance, and the odor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/122C02F11/143C02F11/06C02F9/14
CPCC02F1/24C02F1/5245C02F1/56C02F1/66C02F3/30C02F9/00C02F11/06C02F11/122C02F11/14C02F2001/007C02F2301/08
Inventor 缪绎朱浴宇周娟娟张文俊施昱陶宁钱铖斌孙伟张轶
Owner 无锡市水务集团有限公司
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