Purification method of mixed water body with algae and silt

A water and sediment technology, which is applied in the field of purification of polluted water bodies, can solve the problems of difficulty in meeting turbidity standards, large equipment investment, and high sediment specificity, so as to save air flotation tanks, accelerate sedimentation speed, and complete flocculation. Effect

Active Publication Date: 2010-12-01
YUNNAN THREE CIRCLES SINOCHEM FERTILIZERS CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sediment is really heavy, and its treatment requirements are just opposite to those of algae. Sediment is suitable to be treated by "flocculation-sedimentation tank", but the treatment effect of "flocculation-air flotation tank" is not good, so it is a dilemma.
When the water body reaching the downstream water intake position contains both a lot of algae and a large amount of sediment, the existing technology generally adopts "adding inorganic flocculants for flocculation, and using a single-stage air flotation tank or a single-stage settling tank for liquid-solid separation. Then carry out the process of "fine filtration treatment", the concentration of suspended solids (SS, the same below), turbidity and other indicators in clean water are difficult to meet the standards, and are not applicable
If the two-stage pool (serial connection) treatment process of the air flotation tank and the sedimentation tank is adopted, on the one hand, the equipment investment is large, and on the other hand, both the air flotation tank and the sedimentation tank need to add a large amount of flocculation agents separately, and the process is long and the operation cost is high. The total cost of processing is high, which restricts the practical application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Purification method of mixed water body with algae and silt
  • Purification method of mixed water body with algae and silt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

Embodiment 2～12

Embodiment 13

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for clarifying a mixed water body containing algae and sand. Firstly, inorganic flocculating agent is added into the mixed water body containing the algae and the sand, and is evenly mixed through a pipeline mixer to generate flocculation, then organic flocculating agent is added after a plurality of small flocculating conglomerations are produced, and is evenly mixed through the pipeline mixer to form a coagulated water body containing large flocculating conglomerations, wherein, the adding amount of the inorganic flocculating agent is 0.0005 to 0.0100 percent of the weight of the water body, and the adding amount of the organic flocculating agent is 0.0001 to 0.0030 percent of the weight of the water body. Then the coagulated water body is drawn into a single-segment sedimentation pond for sedimentation treatment, and water overflows from the upper layer of the sedimentation pond, enters a fine filter chamber, and passes through a quartz sand and anthracite filtering layer for fine filtration treatment, thereby obtaining clear water with SS less than or equal to 5mg / L and a turbidity less than or equal to 1.

Description

A purification method for mixed water containing algae and sediment technical field The invention relates to a method for purifying polluted water, and the method of the invention is particularly suitable for purifying mixed water containing algae and sediment. Background technique With the rapid development of the economy, the environmental pollution caused by it has attracted great attention from all aspects of the society. Many domestic lakes, such as the "pearl of the plateau" - Dianchi Lake, have experienced "eutrophication" and the water contains a lot of overgrown algae. For a long time, the purification and treatment of polluted water bodies like Dianchi Lake has been a difficult problem. The true specific gravity of algal matter is small, so it is suitable to use "flocculation-air flotation tank" treatment, and the treatment effect of "flocculation-sedimentation tank" is not good. And when the lake water body containing more algae flows for a certain distance al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): B01D21/01C02F9/02C02F1/52
Inventor吴向东王煜资学民刘程勇赵茂方秀丽俞炳书
OwnerYUNNAN THREE CIRCLES SINOCHEM FERTILIZERS CO LTD