Parameter

Johkasou (typical Japanese packaged units)

easySTP (India-adapted)

Manufacturing method (FRP tank)

Chop-spray / contact molding (also called spray-up or hand lay-up with chopper gun) for many classic Johkasou tanks — lower fibre continuity, more resin-rich, easier to produce in many factories. (Magnum Venus Products)

Filament-winding for main cylindrical shell (continuous fibre, controlled fibre angles, higher fibre volume fraction → much higher structural strength and predictable properties). User/company claim: easySTP uses filament winding for structural shells; domes/ends may be molded or overlaid. (Filament winding references). (Wikipedia)

Structural strength & stiffness

Good, but generally lower hoop/axial strength per mm due to chopped fibers and resin-rich matrix — more subject to impact and long-term fatigue under load. (ResearchGate)

Higher strength-to-weight ratio, engineered fibre placement gives better hoop & axial strength; more tolerant of ground loads and handling. Filament wound shells also allow optimized thickness and controlled failure modes. (Wikipedia)

Durability in Indian climate(heat cycles, UV, variable temps)

Adequate if made well and UV-protected; more vulnerable to resin-rich zones, microcracks, and long term degradation if not properly controlled.

Designed for India’s extremes — filament winding gives consistent laminate with higher glass content and better thermal/mechanical tolerance; combined with appropriate resin selection improves life in high temperature cycles. (company claim / design decision)

Tolerance to misuse / solids / kitchen waste

Japanese households often have grinders; Johkasou designs historically assume less coarse kitchen solids (less grit) — this influenced internal configuration and smaller external screens. (Kubota Global Site)

Indianized by adding an external Bar-Screen Chamberto intercept kitchen solids, rags, and plastics before entering the primary chamber — reduces clogging, protects pumps and diffusers (practical adaptation to Indian usage patterns). (company claim)

Process & biology(treatment stages)

Full Johkasou process: primary settling, anaerobic digestion, aerobic treatment, secondary settling, chlorination, with continuous recirculation (multi-pass) to improve settling and BNR. This is the classic process topology used in Japanese units. (Kubota Global Site)

same Johkasou-derived process (primary + anaerobic + aerobic + recirculation + secondary settling + chlorination). easySTP follows Johkasou process but tuned for Indian influent (higher solids, grease, seasonal temp swings). (company claim)

Tertiary requirement

Many Johkasou designs achieve good final clarity and low SS because of excellent sludge settling from recirculation — often minimal tertiary filtration required for non-potable reuse. (Kubota Global Site)

same advantage retained — easySTP encourages good settling; but Indian reuse standards / local norms will dictate tertiary usage (e.g., for horticulture vs cooling towers). (company guidance)

Quality control & standardization

In Japan, Johkasou manufacture and installation is standardized and regulated (Johkasou Law, inspections, certified technicians). Manufacturers like Kubota follow strict QC. (Kubota Global Site)

easySTP follows factory QC, adds stronger manufacturing method (filament winding) and locally tested processes for Indian sewage; supports certified installers & AMC network. (company operations)

Ease of local servicing / spare parts

In Japan: strong local ecosystem for spares/inspectors. Outside Japan, spare/support depends on local importer network. (Kubota Global Site)

Designed with local maintainability in India: local spares, trained technicians, and bar-screen makes routine servicing simpler. (company operations)

Typical capacity & scaling

Johkasou units commonly for household to small multi-household (1–50 KLD module sizes — modular). Manufacturers combine modules for larger capacities. (Daiki Axis India)

easySTP available in modular sizes; for larger campus/municipal >200 KLD, RCC tanks with Johkasou process are recommended (see RCC note below). (company product strategy)

Lifespan (shell & structure)

Variable — depends on resin system, laminate quality, UV protection; chop-spray tanks have shorter predictable strength life than filament wound shells if both are properly made. (Magnum Venus Products)

Longer predicted life for filament wound shell; better resistance to mechanical stress and fatigue; lower likelihood of cracking under transport/installation stress. (company claim + manufacturing evidence)

Cost

Chop-spray / spray-up is cheaper per unit in low-volume or low-tech factories; mass production & standardization in Japan brought costs down with economies of scale. (Magnum Venus Products)

Filament winding requires dedicated machinery and mandrels — higher CAPEX for factory but better repeatability and long-term value. With scale, per-unit cost becomes competitive and justifiable for higher durability in Indian conditions. (Wikipedia)

Patent & IP

Johkasou is a standardized national model — NOT a single-company patent. (Kubota Global Site)

easySTP is an implementation / adaptation — manufacturing method (filament winding) and process are standard composites practice and the Johkasou process is public domain; you can brand it as easySTP (as you intend). (company positioning)