CN102352257A

CN102352257A - Method for producing saline-alkali soil improving agent by utilizing dewatered sludge of domestic sewage plant

Info

Publication number: CN102352257A
Application number: CN2011102291722A
Authority: CN
Inventors: 张华武
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-02-15

Abstract

The invention relates to a method for preparing a saline-alkali soil improving agent by utilizing dewatered sludge of a domestic sewage treatment plant and is characterized by effectively utilizing the sludge of the sewage treatment plant, reducing saline and alkali of modified saline-alkali land, dissolving salinity and accelerating the soil desalinization so as to achieve the method for preparing the saline-alkali improving agent meeting the requirements of greening, agricultural production and other planting requirements. The dewatered sludge, cottonseed hull powder, sugar residue mud, xylitol residue and other organic matters are fully utilized, microbial halophilic bacteria and other beneficial florae are added, mixing and fermentation are performed, and sulfur powder, calcium carbonate, ferrous sulfate and other inorganic mineral matters are further added after complete decomposition, thereby preparing the saline-alkali improving agent; and the saline-alkali improving agent can be suitable for improving saline-alkali soil with the ph of less than 11 and the salinity of less than 1.5% and enable the soil to achieve the requirements of agricultural production or a green environment through one to two planting cycles. The proportion of all the raw materials can be regulated according to the saline and alkali content of the local saline-alkali soil, thereby being suitable for the various types of the saline-alkali land.

Description

Utilize the domestic sewage factory dewatered sludge to produce saline-alkali soil conditioner

Technical field

The present invention relates to the method that sanitary sewage disposal factory dewatered sludge prepares saline-alkali soil conditioner; Characteristics are effectively to utilize sludge of sewage treatment plant; It is saline and alkaline to reduce the improvement saltings; The dissolving salinity; Quicken the soil desalination, make it to reach the making method of planting requirement saline soils such as greening, agriculture production.

Background technology:

The saltings is owing to contain excessive salt; The alkali composition, salt and alkali and deposit the complicacy that has determined alkaline land improving, the geographic area is different; The salt alkali content is difference to some extent also, and the saltings, coastland distributes wider, and salt content is high; Main reason is that height above sea level is lower in the district, and ground water table is higher, and salinity is high; The soil permeability of throughout the year evaporating brine is poor; Soil temperature rises slow, and nutrient discharges slow, and permeability coefficient is low; Physical features more low-lying mild due to; Ground surface soil often is white in color in dry season, even the shape salt incrustation; The soil compaction be full of cracks; Salinity is high, and alkali is corrosive, and destroys plant cell tissue; Plant generates in harm; Land occupation condition is poor, and accumulation of salt in the surface soil situation is serious, hinders the normal physiological activity of plant; Suppress growth, high basicity can directly make tree root rot to cause death.In recent years because the needs of economy development of coastal area; The part saltings is developed just energetically; But saline and alkaline governing problem is still the more insoluble difficult problem in various places; Present technique has remedied the shortcoming of other saline and alkaline improvement, has effectively utilized mud, waste residue the like waste, utilizes biotechnology; Improve saline and alkaline; Utilization of waste material, energy-conserving and environment-protective are excellent technique of benefiting the nation and the people.

Summary of the invention:

Make full use of organic matters such as dewatered sludge, cotton seed hulls powder, sugared slag mud, Xylitol slag; Add microorganism halophilic bacterium and other profitable strains; Mixed fermentation; After all becoming thoroughly decomposed; Add inorganic minerals such as SULPHUR POWDER, lime carbonate, ferrous sulfate again; Process saline soil, can adapt to general ph less than 11, salinity is less than the improvement of 1.5% salt affected soil, makes it to arrive through one to two crop cycle the requirement of agriculture production or green ring.The ratio of regulating each raw material according to the height of local salt affected soil saliferous alkali number is to adapt to various saline and alkaline soils.

Description of drawings

Accompanying drawing is technological process of production figure

(1) agriculture and industry waste (2) dewatered sludge (3) mixing and blending machine (4) adds microorganism halophilic bacterium agent (5) the high temperature material that fermentation (6) becomes thoroughly decomposed of banking up and adds SULPHUR POWDER, lanthanide oxide, CaCO ₃, FeSO ₄Mix

Embodiment

1, with 100 parts of dewatered sludges, cotton seed hull slag 15-25 part, sugared mud 5-10 part, Xylitol slag 25-35 part, furfural dregs 20-25 part, mixing and stirring, the per-cent 100 of adding material and microorganism halophilic bacterium: 0.5-1 stirs.

2, step 1 was fermented through 3 days, temperature is about 70-80 ℃, thermophilic fermentation, and turning is fermented and was fermented in 3 days, all becomes thoroughly decomposed.

3, the material of step 2 fermentation is added SULPHUR POWDER (120 order) 12-18 part, lanthanide oxide 5-10 part, CaCO ₃4-7, FeSO ₄2-6, thorough mixing stir, and detect microbe population, moisture and promptly make saline-alkali soil conditioner after qualified.

4, according to various components in proportions more than the variation appropriate change of saltings salt alkali content, to adapt to the improvement in different saltingss.

Mud after this saline-alkali soil conditioner is pushed by dehydration is made into through the halophilic bacterium thermophilic fermentation, contains a large amount of beneficial microorganism bacterium, can effectively reduce the saline and alkaline harm in saltings, also can increase the nutrient in the soil, is prone to decompose, and is absorbed by crop easily.Can also the activating soil nutrient, contain the physical form that abundant organic matter improves soil, can form the crumb structure of soil; Granule with granule between the bigger hole of formation, can breathe freely, permeable rainfall or when pouring water; Moisture is permeated the ground rapidly; The dissolving salinity increases organic content, improves the soil and improves crop to the nutrient absorbing utilization; Improve the soil thereby play; Reduce the soil compaction situation, increase soil fertility, can improve disease-resistant anti-adversity ability and the surviving rate of plant.

It is saline and alkaline to reduce the improvement saltings, and the dissolving salinity quickens the soil desalination, makes it to reach the making method of planting requirement saline soils such as greening, agriculture production.

Claims

1. utilize dewatered sludge to prepare the method for saline-alkali soil conditioner; Its method: 100 parts of dewatered sludges; Add cotton seed hull slag 15-25 part, sugared mud 5-10 part, Xylitol slag 25-35 part, furfural dregs 20-25 part, mix stirring, spray compound microbial halophilic bacterium kind; Thorough mixing is even; Bank up and fermented 5 days, carry out turning, continue fermentation 5 days; After the fermentation ends, add SULPHUR POWDER (120 order) 12-18 part, lanthanide oxide 5-10 part, CaCO ₃4-7 part, FeSO ₄2-6 part.

2. saline-alkali soil conditioner according to claim 1 is characterized in that: the cotton seed hull slag is the waste of selecting for use behind the agricultural mushroom plantation fruiting.

3. saline-alkali soil conditioner according to claim 1, it is characterized in that: sugared mud is to select for use sugar refinery to go out filtering body refuse in the waste water of sugar back.

4. saline-alkali soil conditioner according to claim 1, it is characterized in that: the Xylitol slag is to select Soft Drinks Plant's depleted bits for use.

5. saline-alkali soil conditioner according to claim 1, it is characterized in that: furfural dregs is earlier with Soft Drinks Plant's depleted bits.

6. saline-alkali soil conditioner according to claim 1, it is characterized in that: SULPHUR POWDER is to select agricultural 120 orders for use.

7. saline-alkali soil conditioner according to claim 1, it is characterized in that: lanthanide oxide is to select agricultural material for use.

8. saline-alkali soil conditioner according to claim 1 is characterized in that: CaCO ₃Be to select agricultural material for use.

9. saline-alkali soil conditioner according to claim 1 is characterized in that: FeSO ₄Be to select agricultural material for use.

10. utilize dewatered sludge to prepare the method for saline-alkali soil conditioner according to claim 1, its method is:

(1) 100 parts of dewatered sludges, cotton seed hull slag 15-25 part, sugared mud 5-10 part, Xylitol slag 25-35 part, furfural dregs 20-25 part thorough mixing are evenly added microorganism halophilic bacterium liquid in the back, the per-cent of material and microorganism halophilic bacterium kind is 100: 0.5-1;

(2) be step (1) about 70-80 ℃ through 3 days leavening temperatures, thermophilic fermentation, turning through fermentation in 3 days, is all become thoroughly decomposed again, eliminates assorted bacterium, grass-seed etc.;

(3) get an amount of step (2) and SULPHUR POWDER (120 order) 12-18 part, lanthanide oxide 5-10 part, CaCO ₃4-7 part, FeSO ₄2-6, thorough mixing is even.The material of output can be done the usefulness of saline-alkali soil conditioner.