Provided is an expandable, modular tower planter having an internal vertical composting capability, and a method of assembling and using the same. Provided in various example embodiments is a modular composting garden container system comprising a base and a plurality of stackable rings forming a tower upon the base, including an optional base ring specially sized, shaped, and positioned to connect the tower to the base. A plurality of perforated, stackable tube sections are provided that are removably assembled into a compost tube assembly of selectable height and mounted within the interior of the tower and above the base. A plurality of holding struts are sized, shaped, and positioned to removably connect the compost tube assembly with the tower and to securely locate the compost tube assembly relative to the tower. Means are provided for recovering nutrient-rich drainage and selective recovery of compost material for reintroduction into the system.

A portable, climate-controlled, continuous flow-through, computer-operated vermiculture bioreactor and method for the treatment of organic solid wastes utilizing accelerated microbiological decomposition including composting and vermicomposting to convert materials into environmentally compatible products, including stable biofertilizer. The portable bioreactor design converts carbon-based organic waste into biofertilizer using thermophilic composting, vermicastings and vermicomposting that can be used directly for plant and farming applications.

Various examples are provided for in situ growth of subsurface structures using bioinspired mineralization. In one example, among others, a method for growth of a subsurface structure includes introducing a first aqueous mineral salt reactant and a second aqueous mineral salt reactant comprising a polymeric additive into a soil substrate. The first and second aqueous mineral salt reactants can combine to form a polymer-induced liquid-precursor (PILP) phase that initiates in situ mineralization in the soil substrate. Solidifying the mineralization can form a subsurface structure in the soil substrate. Multiple applications of aqueous mineral salt reactants can be introduced to adjust the thickness of the mineralization or for layers of coatings.

Embodiments disclosed herein are directed to methods and systems of concentrating effluent, removing nitrogen from an effluent, and producing fertilizer from an effluent. In an embodiment, the effluent is a digestate, such as from a biomass digester. In an embodiment, the digestate is concentrated and nitrogen is removed by performing forward osmosis using a draw solution and the digestate as a feed solution. The draw solution is subjected to reverse osmosis to produce an ammonium salt fertilizer. Phosphorus in the effluent may be precipitated as a struvite fertilizer.

An organic waste digester system is provided. The system includes a heated hopper unit within the housing to receive organic waste. An agitation mechanism mixes the organic waste along with a microbe mixture to aid breakdown of the waste. Liquefied organic waste is discharged through an outlet and conveyed to a drying unit downstream of the hopper unit. The drying unit includes a microwave dryer unit.

A composting chamber for commercial on-site (for example, grocery store) processing of organic matter comprises a simple chamber, with an intake for shredded matter and an auger for movement of matter in situ, said auger operating on a feedback loop based upon fill level of chamber.

The present invention provides a set of large-scale and high-efficiency fly maggot culture equipment and a large-scale and high-efficiency fly maggot culture process and pertains to fly maggot culture. The equipment comprises at least one culturing workshop with a multi-functional ceiling. At least one feeder traveling along double-row burden distributing rails is arranged in the culturing workshop. A pair of main rails is perpendicularly arranged on the front of one ends of the burden distributing rails. A rail car used for transferring the feeder among different burden distributing rails is arranged on the main rails. Transferring rails horizontally perpendicular to the main rails are arranged on the rails car. The height of the transferring rails is consistent with the height of the distributing rails. The workshop ground between the two rails of the distributing rails form a culturing bed for fly maggot culture. The equipment also includes a central control apparatus connected with an alarm and a fly maggot separator. The equipment and the process provided in this present invention can realize incessant fly maggot flow line culture, without being affected by temperature, and is much highly automatic to realize fly maggot production in large scale and with high effectiveness.

Biochars and methods for treating biochars are provided that are useful in various applications, including, but not limited to, applications related to the raising, care, maintenance, disease prevention, disease treatment and odor control of animals.

A method of producing a fertiliser composition, the method comprising: (a) providing a composition comprising an amino compound; (b) contacting the composition provided in step (a) with a composition comprising carbon dioxide; and (c) adding a composition comprising cellulosic fibres to the mixture obtained in step (b).

The present invention provides organic slow-acting fertilizer using psyllium seed husk and a method for producing the same. Macroelements or secondary elements selected from 12 essential nutrient elements (N, P, K, Ca, Mg, S, Fe, Mn, Cu, B, Mo, and Zn) for edible plants are extracted from each of oil cake (collectively referring to residue remaining after extraction of vegetable oil, and including soybean oil cake, palm oil cake, etc.), blood meal (livestock blood), dead fish or bonefish-containing by-products, bone meal, Dead Sea mineral, egg shell, seashell, oystershell, natural gypsum, dolomite, phyllite, and natural salt, by a predetermined extraction process, and are impregnated in larger amounts into a porous material such as zeolite, and organic fertilizers are produced in the form of psyllium seed husk-bound grains for more rapid and effective impregnation so that suitable proportions of element fertilizers can be supplied to each type of plant.